Source View: wp_get_attachment_thumb_url

To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).

Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: apply_filters( "hook_name", "what_to_filter" ).

Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.

Source View

Line Code
2587      $sized = image_downsize( $post_id, 'thumbnail' );
2588      if ( $sized )
2589           return $sized[0];
2590
2591      if ( !$thumb = wp_get_attachment_thumb_file( $post->ID ) )
2592           return false;
2593
2594      $url = str_replace(basename($url), basename($thumb), $url);
2595
2596      return apply_filters( 'wp_get_attachment_thumb_url', $url, $post->ID );
2597 }
2598
2599 /**
2600  * Check if the attachment is an image.
2601  *
2602  * @since 2.1.0
2603  *
2604  * @param int $post_id Attachment ID
2605  * @return bool